Jay wrote...

Dave,
I think we're saying the same thing, moving a lighter weight out
further from the CG will increase the moment of inertia.

We're saying the same thing about moment of inertia. That's got
plenty to do with achievable angular acceleration but nothing
to do with stability. Additional area ahead of the CG is
DEstabilizing, not stabilizing, as you stated.

Dave 'co-efficient' Hyde